Conservation of Momentum

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Presentation transcript:

Conservation of Momentum

Just like Energy, Momentum is Conserved! Total Momentum Before = m1vi1 + m2vi2 m2* vi2 m1* vi1 m2* vf2 m1* vf1 Total Momentum After = m1vf1 +m2vf2

m1vi1 + m2vi2 = m1vf1 + m2vf2 Total Initial Momentum = Total Final Momentum A 76 kg boater initially at rest in a stationary 45 kg boat, steps out of the boat and onto the dock. If the boater moves out of the boat with a velocity of 2.5 m/s to the right, what is the final velocity of the boat? Initial Momentum M1 = V1 = M2 = V2 = Final Momentum M1 = V1 = M2 = V2 = 75kg 75kg 0 m/s 2.5 m/s right 45 kg 45kg 0 m/s ? m/s pi = 0 kg m/s pf = 0 kg m/s